Attempt to fix issue reported by AnthonyMDev where using ALAutoResizingTextView within a table view was causing problems...
Moved [super updateConstraints] to end of implementation
Added Auto Resizing Text View in Table View Cell to Demo Project
1) Rewrote tests to use `OCMock` and `Expecta` instead of `OCHamcrest` and `OCMockito`.
2) This allowed the main code to be cleaned up (got rid of ugly "private" functions that existed only for unit testing).
3) Removed `AOTestCase`, `OCHamcrest`, `OCMockito` from pod spec.
Merge pull request #2 from JRG-Developer/anthony

Added Auto Resizing Text View in Table View Cell to Demo Project
Created demo text view cell class - `ALTextViewCell`, so that it can be configured. Fixed other misc issues.
Bumped demo's target version to `8.0`. Fixed deprecated warnings.

NOTE: `AutoLayoutTextViews` WILL continue to support iOS 7.0+. The only reason the demo is `8.0+` is for ease in showcasing an `ALAutoResizingTextView` within a table view cell.
If you need to support iOS 7.0+, check out `AutoLayoutCells` repo, which has a dependency on `AutoLayoutTextViews`.
Don't animate the change if the placeholder should be drawn... if it is, weird visual mishaps can occur (e.g. scrunched placeholder text).